const node = {
    title: '00000',
    key: '0',
    level: 'level1',
    open: true,
    children: [
        {
            title: '0-111111',
            key: '0-0',
            level: 'level2',
            open: true,
            children: [
                {
                    title: '0-1-1111',
                    key: '0-0-0',
                    level: 'level3',
                },
                {
                    title: '0-1-2222',
                    key: '0-0-1',
                    level: 'level3',
                    open: true,
                    children: [
                        {
                            title: '0-1-2-11111',
                            key: '0-0-1-0',
                            level: 'level4',
                            open: true,
                            children: [
                                {
                                    title: '0-1-2-1-111',
                                    key: '0-0-1-0-0',
                                    level: 'level5',
                                }
                            ]
                        }
                    ]
                },
                {
                    title: '0-1-33333',
                    key: '0-0-4',
                    level: 'level3',
                },
            ]
        },
        {
            title: '0-222222',
            key: '0-2',
            level: 'level2',
            open: false,
            children: [
                {
                    title: '0-2-1111',
                    key: '0-2-0',
                    level: 'level3',
                },
                {
                    title: '0-2-22222',
                    key: '0-2-1',
                    level: 'level3',
                },
                {
                    title: '0-2-33333',
                    key: '0-2-2',
                    level: 'level3',
                }
            ]
        }
    ]
};